I made sure to customize it as closely as possible to what we need (mainly making sure to set the coordinates to Cartesian), and then uploaded the generated zip to the Duet. We ended up having some communication problems, so we redid the steps and had to disable DHCP and enable static IP. After this, it worked!

We are now able to send individual X Y Z commands and it moves the appropriate motor by itself, so it seems your suggestions was spot on! Thank you